The Seiko Astron SSH179 is powered by the 5X83 caliber GPS solar movement, offering global precision and time zone adjustment via satellite signal connection. It features an operating power reserve of approximately 6 months on a full charge, extending up to 2 years in power save mode.

Crafted with a lightweight and durable titanium case featuring a super-hard coating, the watch measures 44.1mm in diameter, 14.4mm in thickness, and 50.0mm lug-to-lug. It is protected by a dual-curved sapphire crystal with super-clear coating alongside Lumibrite-treated hands and indices for enhanced visibility.

This multifunctional timepiece includes a 1/20-second chronograph up to 12 hours, world time across 38 cities, a dual-time display, and a perpetual calendar correct to the year 2100. It also offers 10 bar water resistance, 4,800 A/m magnetic resistance, and an easy-adjust three-fold clasp with push-button release.

Key Features

Brand	Seiko
Product Type	Wristwatch
Department	Men's
Collection	Astron
Caliber Number	5X83
Movement Type	GPS solar
Precision	±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C)
Power Reserve	Operating for approx. 6 months (when fully charged), power save: approx. 2 years
Jewels	14
Case Material	Titanium (super-hard coating)
Case Diameter	44.1 mm
Case Thickness	14.4 mm
Lug-to-Lug Distance	50.0 mm
Distance Between Lugs	14 mm
Crystal	Dual-curved sapphire crystal
Crystal Coating	Super-clear coating
LumiBrite	Lumibrite on hands and index(es)
Clasp	Easy-adjust three-fold clasp with push button release
Water Resistance	10 bar
Magnetic Resistance	4,800 A/m
Weight	110 g
Features	Allergy-safe metal, Screw case back, Chronograph up to 12 hours in 1/20 second increments, Perpetual calendar to February 28, 2100, World time function (38 cities), Dual-time function, Time transfer function, GPS signal reception

Highlights

GPS solar caliber 5X83 movement with automatic and manual satellite time synchronization
Durable, lightweight titanium case with super-hard coating and allergy-safe construction
Dual-curved sapphire crystal with super-clear anti-reflective coating
1/20-second chronograph, world time across 38 cities, and perpetual calendar to 2100
10 bar water resistance and 4,800 A/m magnetic resistance
Easy-adjust three-fold clasp with push-button release

Downloads

Download User's Manual

Frequently asked questions

What movement powers the Seiko SSH179?

It is powered by the Seiko caliber 5X83 GPS solar movement.

How long does the power reserve last?

The watch operates for approximately 6 months on a full charge, and up to 2 years in power save mode.

What material is used for the watch case?

The case is made of lightweight titanium treated with a super-hard coating.

What are the dimensions of the case?

The case measures 44.1mm in diameter, 14.4mm in thickness, and 50.0mm lug-to-lug.

What is the water resistance rating of this watch?

The watch is water resistant up to 10 bar.

Does the watch have world time and chronograph functions?

Yes, it features world time across 38 cities and a chronograph measuring up to 12 hours in 1/20-second increments.

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